Files
oikos/internal/mcp/tools.go
dtoro 9e3783734e
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feat: Phase 3b — EntityService, postgres EntityRepository, converged mutations
Problem: entity mutations (create/update/state) existed as three drifted
copies — HTTP CreateEntity/PatchEntity, MCP create_entity/
update_entity_attributes/set_entity_state — each with its own inline
SQL, its own validation subset (MCP validated lifecycle states, HTTP
did not; HTTP patched attributes without regenerating derived checks,
MCP did; MCP wrote no audit trail), the exact drift ADR 0016's first
vertical slice exists to collapse.

Change:
- internal/core/ports: DerivedCheck, Idempotency (adapter-owned request
  hash + cached-body renderer so the replay record commits in the
  create's transaction), IdempotentResponse + GetIdempotent read,
  AuditEntry gains Method/Path/CorrelationID, Event gains
  CorrelationID; EntityUpdateInput carries ExpectedVersion +
  RederiveChecks (derivation for updates runs repo-side: the graph
  host fallback reads relationships through the open tx).
- internal/adapters/postgres/repositories.go: EntityRepo (Create/
  Update/SetState/reads/idempotency) preserving the load-bearing
  check-then-act invariants in-tx: version WHERE-clause, declared
  transitions + preconditions (ValidateTransition), duplicate-slug
  mapping, audit/event/writeCheck all inside one BEGIN…COMMIT.
  OntologyRepo: TTL-cached OntologyStore.
- internal/core/app/entities.go: EntityService — ontology validation
  (type exists, concrete, state declared — the stricter MCP rule now
  governs both surfaces), default-state resolution, id generation,
  derivation for creates, audit/event construction, idempotency
  pass-through.
- httpapi CreateEntity/PatchEntity rewired to the service; PATCH now
  regenerates derived checks (the A2 parity gap). MCP create/update/
  set-state tools call the same service — and now write audit + event
  rows like the HTTP surface always did.
- Integration-test seed paths fixed for the adapters/postgres package
  depth (../../../seeds).

Pre-existing failures documented: TestAPIEndToEnd (entity_types 60 vs
59; 501-endpoint now 200), TestClientLifecycleEndToEnd, TestPhase3*
rows — verified failing identically at ec11956 (scratch approval-
notifier commit test drift), unrelated to this change. All mutation
integration tests (create/patch/idempotency/audit/regeneration) pass.

Verification: make test-db (postgres + mcp green, httpapi green except
the pre-existing set), full non-DB suite (19 pkgs), golangci on new
packages — 0 issues.
2026-08-15 23:38:21 +02:00

87 lines
2.1 KiB
Go

package mcp
import (
"context"
"fmt"
"strings"
"github.com/dtoro/oikos/internal/core/app"
"github.com/dtoro/oikos/internal/core/ports"
"github.com/dtoro/oikos/internal/adapters/postgres"
"github.com/google/uuid"
"github.com/modelcontextprotocol/go-sdk/mcp"
)
type toolReg struct {
tool *mcp.Tool
handler toolHandler
}
func allTools(pool *db.Pool, agentID uuid.UUID, sec ports.Secrets, entities *app.EntityService) []toolReg {
return append(append(append(append(
[]toolReg{},
EntityTools(pool, agentID, sec, entities)...),
OpsTools(pool, agentID, sec)...),
KnowledgeTools(pool, agentID, sec)...),
AnalysisTools(pool, agentID, sec)...)
}
func formatCheckResult(res app.DeriveResult) string {
var b strings.Builder
if res.Created > 0 {
fmt.Fprintf(&b, " Derived %d check(s).", res.Created)
}
if res.Undeclared {
b.WriteString(" Type declares no monitoring — no checks derived (set the entity's `monitoring` attribute and call update_entity_attributes to regenerate).")
}
for _, s := range res.Skipped {
fmt.Fprintf(&b, " Skipped %s (%s).", s.Kind, s.Reason)
}
return b.String()
}
func formatCreateResult(slug, entityType string, res app.DeriveResult) string {
return fmt.Sprintf("Created %s (%s).%s", slug, entityType, formatCheckResult(res))
}
func rowsToMap(ctx context.Context, pool *db.Pool, query string, args ...any) map[string]any {
m := map[string]any{}
rows, err := pool.Query(ctx, query, args...)
if err != nil {
return m
}
defer rows.Close()
for rows.Next() {
var key string
var val int
if rows.Scan(&key, &val) == nil {
m[key] = val
}
}
return m
}
func queryRowsJSONSingle(ctx context.Context, pool *db.Pool, query string, args ...any) []map[string]any {
rows, err := pool.Query(ctx, query, args...)
if err != nil {
return nil
}
defer rows.Close()
cols := rows.FieldDescriptions()
var items []map[string]any
for rows.Next() {
vals, err := rows.Values()
if err != nil {
continue
}
m := make(map[string]any)
for i, col := range cols {
m[string(col.Name)] = fmt.Sprintf("%v", vals[i])
}
items = append(items, m)
}
return items
}